/*
 * TeleStax, Open Source Cloud Communications  Copyright 2012.
 * and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.protocols.ss7.map.service.mobility.subscriberManagement;

import java.io.IOException;

import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.map.api.MAPException;
import org.mobicents.protocols.ss7.map.api.MAPParsingComponentException;
import org.mobicents.protocols.ss7.map.api.MAPParsingComponentExceptionReason;
import org.mobicents.protocols.ss7.map.api.primitives.MAPExtensionContainer;
import org.mobicents.protocols.ss7.map.api.service.mobility.subscriberManagement.ExtCallBarringFeature;
import org.mobicents.protocols.ss7.map.api.service.mobility.subscriberManagement.ExtBasicServiceCode;
import org.mobicents.protocols.ss7.map.api.service.mobility.subscriberManagement.ExtSSStatus;
import org.mobicents.protocols.ss7.map.primitives.MAPExtensionContainerImpl;
import org.mobicents.protocols.ss7.map.primitives.SequenceBase;
import org.mobicents.protocols.ss7.map.service.mobility.subscriberManagement.ExtBasicServiceCodeImpl;
import org.mobicents.protocols.ss7.map.service.mobility.subscriberManagement.ExtSSStatusImpl;

/**
 * @author daniel bichara
 * @author sergey vetyutnev
 * 
 */
public class ExtCallBarringFeatureImpl extends SequenceBase implements ExtCallBarringFeature {

	private static final int _TAG_ss_Status = 4;

	private ExtBasicServiceCode basicService = null;
	private ExtSSStatus ssStatus = null;
	private MAPExtensionContainer extensionContainer = null;

	public ExtCallBarringFeatureImpl() {
		super("ExtCallBarringFeature");
	}

	/**
	 * 
	 */
	public ExtCallBarringFeatureImpl(ExtBasicServiceCode basicService,  ExtSSStatus ssStatus, 
		MAPExtensionContainer extensionContainer) {
		super("ExtCallBarringFeature");

		this.basicService = basicService;
		this.ssStatus = ssStatus;
		this.extensionContainer = extensionContainer;
	}

	public ExtBasicServiceCode getBasicService() {
		return this.basicService;
	}

	public ExtSSStatus getSsStatus() {
		return this.ssStatus;
	}

	public MAPExtensionContainer getExtensionContainer() {
		return this.extensionContainer;
	}

	protected void _decode(AsnInputStream ansIS, int length) throws MAPParsingComponentException, IOException, AsnException {
		this.basicService = null;
		this.ssStatus = null;
		this.extensionContainer = null;

		AsnInputStream ais = ansIS.readSequenceStreamData(length);

		while (true) {
			if (ais.available() == 0)
				break;

			int tag = ais.readTag();

			switch (ais.getTagClass()) {
			case Tag.CLASS_CONTEXT_SPECIFIC:
				switch (tag) {
				case ExtBasicServiceCodeImpl._ID_ext_BearerService:
				case ExtBasicServiceCodeImpl._ID_ext_Teleservice:
					if (!ais.isTagPrimitive())
						throw new MAPParsingComponentException("Error while decoding " + _PrimitiveName
								+ ".basicService: is not primitive", MAPParsingComponentExceptionReason.MistypedParameter);
					this.basicService = new ExtBasicServiceCodeImpl();
					((ExtBasicServiceCodeImpl) this.basicService).decodeAll(ais);
					break;
				case _TAG_ss_Status:
					if (!ais.isTagPrimitive())
						throw new MAPParsingComponentException("Error while decoding " + _PrimitiveName + ".ssStatus: is not primitive",
								MAPParsingComponentExceptionReason.MistypedParameter);
					this.ssStatus = new ExtSSStatusImpl();
					((ExtSSStatusImpl) this.ssStatus).decodeAll(ais);
					break;
				default:
					ais.advanceElement();
					break;
				}
				break;

			case Tag.CLASS_UNIVERSAL:
				switch (tag) {
				case Tag.SEQUENCE:
					if (!ais.isTagPrimitive())
						throw new MAPParsingComponentException("Error while decoding " + _PrimitiveName
								+ ".extensionContainer: is primitive", MAPParsingComponentExceptionReason.MistypedParameter);
					this.extensionContainer = new MAPExtensionContainerImpl();
					((MAPExtensionContainerImpl) this.extensionContainer).decodeAll(ais);						
					break;
				default:
					ais.advanceElement();
					break;
				}
				break;
			
			default:
				ais.advanceElement();
				break;
			}
		}

		if (this.ssStatus == null)
			throw new MAPParsingComponentException("Error while decoding " + _PrimitiveName + ": ssStatus required.", MAPParsingComponentExceptionReason.MistypedParameter);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.mobicents.protocols.ss7.map.primitives.MAPAsnPrimitive#encodeData
	 * (org.mobicents.protocols.asn.AsnOutputStream)
	 */
	public void encodeData(AsnOutputStream asnOs) throws MAPException {

		if (this.ssStatus == null)
			throw new MAPException("Error while encoding " + _PrimitiveName + ": ssStatus required.");

		if (this.basicService != null)
			((ExtBasicServiceCodeImpl) this.basicService).encodeAll(asnOs);

		((ExtSSStatusImpl) this.ssStatus).encodeAll(asnOs, Tag.CLASS_CONTEXT_SPECIFIC, _TAG_ss_Status);

		if (this.extensionContainer != null)
			((MAPExtensionContainerImpl) this.extensionContainer).encodeAll(asnOs);
	}


	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(_PrimitiveName + " [");

		if (this.basicService != null) {
			sb.append("basicService=");
			sb.append(this.basicService.toString());
			sb.append(", ");
		}

		if (this.ssStatus != null) {
			sb.append("ssStatus=");
			sb.append(this.ssStatus.toString());
			sb.append(", ");
		}

		if (this.extensionContainer != null) {
			sb.append("extensionContainer=");
			sb.append(this.extensionContainer.toString());
			sb.append(", ");
		}

		sb.append("]");

		return sb.toString();
	}

}
